Commodities
PrimarySilver, Copper, Zinc, Gold
Commodity typeM
Deposit
Deposit sizeN
Ore controlSulfied Deposits In The Alder Mine Are Concordant With Bedding In The Host Rocks And Are Strata-Bound; Hydrothermal Alteration At The Mine Is Also Strata-Bound. Sulfide Minerals, Including Pyrite, Sphalerite, Chalcopyrite, And Galena Are Found In Veins. The Veins Are Generally Small, Have No Relation To The Alder Stock That Intrudes Volcanic Rocks Near The Mine, And Have Random Orientation.
Materials
Ore mineralsChalcocite, Chalcopyrite, Copper, Galena, Gold, Malachite, Sphalerite
GanguePyrrhotite
Geology
Host rockRhyolite
Tectonic settingNewby Group Rocks Were Probably Deposited Along Or Proximal To An Island Arc.
Economic & production
Development statusOccurrence
Identification
Deposit ID10055964
MRDS IDSP00185
RegionNA
Data scoreB
Coordinates48.32177, -120.15924
References
BARKSDALE, J.D., 1948, STRATIGRAPHY IN THE METHOW QUADRANGLE, WASHINGTON: NORTHWEST SCIENCE, V. 22, NO. 4, P. 164-176BUNNING, B.B., COMPILER, 1990, GEOLOGIC MAP OF THE EAST HALF OF THE TWISP 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-9, 51 P., 1 PL.BURNET, F.W., 1976, FELSIC VOLCANIC ROCKS AND MINERAL DEPOSITS IN THE BUCK MOUNTAIN FORMATION ANDESITES, OKANOGAN COUNTY, WASHINGTON: UNIVERSITY OF WASHINGTON MASTER OF SCIENCE THESIS, 26 P., 1 PL.HUNTTING, M. T., 1956, INVENTORY OF WASHINGTON MINERALS-PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, 428 P.; V. 2, 67 P.MCFARLAND, C.R., MCLUCAS, G.B., RIGBY, J.G., STOFFEL, K.L., 1979, DIRECTORY OF WASHINGTON MINING OPERATIONS, 1979: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 69, 100 P.PURDY, C.P., JR., 1952, DIRECTORY OF WASHINGTON MINING OPERATIONS, 1952: WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 20, 75 P.